Thanks for your impressions. I was in Store today again and did have a chance to compare both 800 and 800s against LCD-3, T1 and some top-of-the-line AKG.
I listened to classical and acoustic, all HQ Reference CD material, not that it would matter for a comparison test.
I listened on a totally overpriced Sennheiser €2K Amp sounding veiled and on the Bryston BHA-1, which sounded really great, detailed and fast. I myself prefer the tonality of my Violectric stack I must say, even if you miss out a tiny bit on Transparence.
AKGs sounded great overall, very lively, but a bit too much mid-thumby for my taste.
T1 sounded basically like a 990, not my cup of tea, too bright, but I guess they need a long warm-up time like most Beyers.
Audeze LCD-X sounded great overall sound, very balanced, less bass than LCD-2. But I crossed Audezes of my list for now, too heavy. To be honest its weight are an impudence and should be considered a bug, not a feature.
Finally, the silver HD800: Way to harsh sounding for my ears personally. Ouch, ouch, ouch. Listening to classic gave great spectrum etc and what not, but Voice/Vocal had many SSSSSssss, nothing I would spend money on.
The HD800s: Much improved, there was bass (!) - compared the HD800 which had no bass at all. Soundstage all great and wide, but lacking visceral impact if you turn the volume up. Great, great with classical, but don't you turn that volume up, don't you do it! I think the 800s are headphones you need to listen silently and need a lot of time and then you will sink into the music like never before. But in the store - not a chance. People chattering, very bad conditions for open sounding cans like the HD800s.
Admiddedly the test was completely unfair, because the gear was cold and not warmed up, but I guess you can compare these Headphones somehow even in this cold state.
I left the store without buying any of them, too uncomfy, too harsh-sounding and the listening environment was subpar.
Even though I really dig detail and microscopical listening experiences, out of the bunch I liked the LCD-2 most, I guess since it has a totally unique sound-signature, very pleasant one I must say. Yet - I am not deaf - I am aware of the absence of any neutrality, soundstage or transparency in the LCD-2s.
I now ordered the latest (Ether C) from MrSpeakers for €1800,- with High-End cabling, because I think with a neutral headphone you can't go wrong. Also I really like that MrSpeakers offers Modding capabilities and upgrades for no more than $5. This way everybody can tune his headphones to his/her liking. Anyway, enjoy your HD800s, I think they are great Headphones, but not for me, I need some visceral impact in the lower regions as well.